-83% is the change from 453 to 77
Calculation steps:
[( 77 - 453 ) ÷ 453] x 100 = -83%
Formula
Percentage change = [(77 - 453) / 453] x 100
Subtract the new number by the original number
77 - 453 = -376
-376 ÷ 453 = -0.8300220750551877
-0.8300220750551877 x 100 = -83%